Auto Leveling system - air compressor

OK - so my wiper motor should arrive tomorrow and I will tackle that project. Now I am also gearing up for my next project. It appears as the air compressor for the auto leveling rear suspension is shot. And as I research the part and pricing I am finding the cost is crazy stupid. Cheapest I had found so far is close to $400. OEM PN#88957250 - has anyone found this for a cheaper price or an inexpensive alternative OR some creativity in an alternative solution?

I know I can do away with it completely and go with the standard suspension setup however I used to tow my 18.5 FT Bayliner with my 02 RDV and would like to do the same with this one.

Your suggestions would be very much appreciated.

Thanks
Dave
:)

It appears that the same compressor was used between 2003-2007. You might find a working used unit here. Car-Part.com--Used Auto Parts Market (http://car-part.com/)
Year (http://car-part.com/cgi-bin/search.cgi?userSearch=exact&userPID=1000&userLocation=USA&userIMS=&userInterchange=%5B%7C%7Br&userSide=&userDate=2003&userDate2=2007&dbModel=12.11&userModel=Buick%20Rendezvous&dbPart=522.1&userPart=Air%20Ride%20Compressor&sessionID=200000000000000000516298985&userPreference=year&userZip=55303&userLat=45.2924&userLong=-93.4325&userUID=0&userBroker=&userPage=1&iKey=)
Part
Model Description Part
Grade (http://car-part.com/cgi-bin/search.cgi?userSearch=exact&userPID=1000&userLocation=USA&userIMS=&userInterchange=%5B%7C%7Br&userSide=&userDate=2003&userDate2=2007&dbModel=12.11&userModel=Buick%20Rendezvous&dbPart=522.1&userPart=Air%20Ride%20Compressor&sessionID=200000000000000000516298985&userPreference=grade&userZip=55303&userLat=45.2924&userLong=-93.4325&userUID=0&userBroker=&userPage=1&iKey=) Stock# US
Price Dealer Info Dist (http://car-part.com/cgi-bin/search.cgi?userSearch=exact&userPID=1000&userLocation=USA&userIMS=&userInterchange=%5B%7C%7Br&userSide=&userDate=2003&userDate2=2007&dbModel=12.11&userModel=Buick%20Rendezvous&dbPart=522.1&userPart=Air%20Ride%20Compressor&sessionID=200000000000000000516298985&userPreference=zip&userZip=55303&userLat=45.2924&userLong=-93.4325&userUID=0&userBroker=&userPage=1&iKey=)
mile 2004
Air Ride Susp. Compressor
Buick RendezvousAIR RIDE COMPRESSOR,03-05BJ-0028$225Choice Auto Recyclers-ARAPRo - formerly Erdman's Auto (http://www.choiceautorecyclers.com/) USA-WI(Marinette) Request_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=g&sEmail=parts@ChoiceAutoRecyclers.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2004&stockNum=J-0028&price=225&desc=AIR%20RIDE%20COMPRESSOR%2C03-05&name=Choice%20Auto%20Recyclers-ARAPRo%20-%20formerly%20Erdman%27s%20Auto&url=http://www.ChoiceAutoRecyclers.com&int=-1&broker=0&recycler=0&selleruserid=2359&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303) 1-800-472-0281 Request_Insurance_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=i&sEmail=parts@ChoiceAutoRecyclers.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2004&stockNum=J-0028&price=225&desc=AIR%20RIDE%20COMPRESSOR%2C03-05&name=Choice%20Auto%20Recyclers-ARAPRo%20-%20formerly%20Erdman%27s%20Auto&url=http://www.ChoiceAutoRecyclers.com&int=-1&broker=0&recycler=0&selleruserid=2359&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303)
http://car-part.com/images/LiveChat_space.gif (http://appcgi.car-part.com/cgi-bin/applet.cgi?sid=2359&brf=&bds=281&bsr=price&pin=&pyr=2004&pmd=Buick%20Rendezvous&ppt=Air%20Ride%20Susp.%20Compressor&ppr=225&pst=J-0028&pgr=B&bty=WEB&bem=&bzp=55303&ses=200000000000000000516298985)2812003
Air Ride Susp. Compressor
Buick RendezvousCOMPRESSOR,IN CARA00009138$125Airport Auto Parts Inc. (http://www.airportautopartsinc.com/) USA-OH(Swanton) Request_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=g&sEmail=airportautoparts@aol.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2003&stockNum=00009138&price=125&desc=COMPRESSOR%2CIN%20CAR&name=Airport%20Auto%20Parts%20Inc.&url=http://www.AirportAutoPartsInc.com&int=-1&broker=0&recycler=0&selleruserid=1426&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303) 1-800-349-1141 Request_Insurance_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=i&sEmail=airportautoparts@aol.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2003&stockNum=00009138&price=125&desc=COMPRESSOR%2CIN%20CAR&name=Airport%20Auto%20Parts%20Inc.&url=http://www.AirportAutoPartsInc.com&int=-1&broker=0&recycler=0&selleruserid=1426&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303)
http://car-part.com/images/LiveChat_space.gif (http://appcgi.car-part.com/cgi-bin/applet.cgi?sid=1426&brf=&bds=543&bsr=price&pin=&pyr=2003&pmd=Buick%20Rendezvous&ppt=Air%20Ride%20Susp.%20Compressor&ppr=125&pst=00009138&pgr=A&bty=WEB&bem=&bzp=55303&ses=200000000000000000516298985)5432003
Air Ride Susp. Compressor
Buick RendezvousNOT COMPRESSOR,LEVEL SENSOR ONLY,NOTEAF-0011$125Choice Auto Recyclers-ARAPRo - formerly Erdman's Auto (http://www.choiceautorecyclers.com/) USA-WI(Marinette) Request_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=g&sEmail=parts@ChoiceAutoRecyclers.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2003&stockNum=F-0011&price=125&desc=NOT%20COMPRESSOR%2CLEVEL%20SENSOR%20ONLY%2CNO TE&name=Choice%20Auto%20Recyclers-ARAPRo%20-%20formerly%20Erdman%27s%20Auto&url=http://www.ChoiceAutoRecyclers.com&int=-1&broker=0&recycler=0&selleruserid=2359&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303) 1-800-472-0281 Request_Insurance_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=i&sEmail=parts@ChoiceAutoRecyclers.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2003&stockNum=F-0011&price=125&desc=NOT%20COMPRESSOR%2CLEVEL%20SENSOR%20ONLY%2CNO TE&name=Choice%20Auto%20Recyclers-ARAPRo%20-%20formerly%20Erdman%27s%20Auto&url=http://www.ChoiceAutoRecyclers.com&int=-1&broker=0&recycler=0&selleruserid=2359&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303)
http://car-part.com/images/LiveChat_space.gif (http://appcgi.car-part.com/cgi-bin/applet.cgi?sid=2359&brf=&bds=281&bsr=price&pin=&pyr=2003&pmd=Buick%20Rendezvous&ppt=Air%20Ride%20Susp.%20Compressor&ppr=125&pst=F-0011&pgr=A&bty=WEB&bem=&bzp=55303&ses=200000000000000000516298985)2812003
Air Ride Susp. Compressor
Buick RendezvousREAR RIDE LEVEL SENSOR 03-05 1579D$85Rhinelander Auto Salvage - RP+ Member (http://www.rhinelanderautosalvage.com/) USA-WI(Rhinelander) Request_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=g&sEmail=Sales@RhinelanderAutoSalvage.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2003&stockNum=1579D&price=85&desc=REAR%20RIDE%20LEVEL%20SENSOR%2003-05&name=Rhinelander%20Auto%20Salvage%20-%20RP%2B%20Member&url=http://www.RhinelanderAutoSalvage.com&int=-1&broker=0&recycler=0&selleruserid=3216&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303) 1-800-236-5639 Request_Insurance_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=i&sEmail=Sales@RhinelanderAutoSalvage.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2003&stockNum=1579D&price=85&desc=REAR%20RIDE%20LEVEL%20SENSOR%2003-05&name=Rhinelander%20Auto%20Salvage%20-%20RP%2B%20Member&url=http://www.RhinelanderAutoSalvage.com&int=-1&broker=0&recycler=0&selleruserid=3216&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303)
http://car-part.com/images/LiveChat_space.gif (http://appcgi.car-part.com/cgi-bin/applet.cgi?sid=3216&brf=&bds=200&bsr=price&pin=&pyr=2003&pmd=Buick%20Rendezvous&ppt=Air%20Ride%20Susp.%20Compressor&ppr=85&pst=1579D&pgr=&bty=WEB&bem=&bzp=55303&ses=200000000000000000516298985)2002003
Air Ride Susp. Compressor
Buick RendezvousSENSOR ONLY 11C029$65Farritor Auto Parts (http://www.farritorautoparts.com/) USA-NE(Broken-Bow) E-mail 1-800-652-93984072004
Air Ride Susp. Compressor
Buick Rendezvous B12-529$CallGreen Point Auto Parts, Inc. (http://www.greenpointauto.com/) USA-ME(Brewer) E-mail 1-800-322-000412032004
Air Ride Susp. Compressor
Buick RendezvousRIDE COMP AND SHOCKSA2RE04$Call205 Auto Salvage (http://www.205autosalvage.com/) USA-OR(Portland) E-mail 1-800-336-256214062005
Air Ride Susp. Compressor
Buick Rendezvous A $CallHolland Used Auto Parts (http://www.hollandusedautoparts.com/) USA-MA(N.-Billerica) Request_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=g&sEmail=Parts@HollandUsedAutoParts.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2005&stockNum=&price=Call&desc=%C2%A0&name=Holland%20Used%20Auto%20Parts&url=http://www.HollandUsedAutoParts.com&int=-1&broker=0&recycler=0&selleruserid=8211&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303) 800-654-8202 / 978-667-9235 Request_Insurance_Quote (http://car-part.com/cgi-bin/quoteForm.cgi?type=i&sEmail=Parts@HollandUsedAutoParts.com&email=&part=Air%20Ride%20Susp.%20Compressor&dbPart=522.1&dbSubPart=&model=Buick%20Rendezvous&dbModel=12.11&year=2005&stockNum=&price=Call&desc=%C2%A0&name=Holland%20Used%20Auto%20Parts&url=http://www.HollandUsedAutoParts.com&int=-1&broker=0&recycler=0&selleruserid=8211&miles=-1&condition=-1&userid=1000&uIMS=&seqNum=200000000000000000516298985&userClaim=&userLang=&userZip=55303)1114 Year (http://car-part.com/cgi-bin/search.cgi?userSearch=exact&userPID=1000&userLocation=USA&userIMS=&userInterchange=%5B%7C%7Br&userSide=&userDate=2003&userDate2=2007&dbModel=12.11&userModel=Buick%20Rendezvous&dbPart=522.1&userPart=Air%20Ride%20Compressor&sessionID=200000000000000000516298985&userPreference=year&userZip=55303&userLat=45.2924&userLong=-93.4325&userUID=0&userBroker=&userPage=1&iKey=)
Part
Model Description Part
Grade (http://car-part.com/cgi-bin/search.cgi?userSearch=exact&userPID=1000&userLocation=USA&userIMS=&userInterchange=%5B%7C%7Br&userSide=&userDate=2003&userDate2=2007&dbModel=12.11&userModel=Buick%20Rendezvous&dbPart=522.1&userPart=Air%20Ride%20Compressor&sessionID=200000000000000000516298985&userPreference=grade&userZip=55303&userLat=45.2924&userLong=-93.4325&userUID=0&userBroker=&userPage=1&iKey=) Stock# US
Price Dealer Info Dist (http://car-part.com/cgi-bin/search.cgi?userSearch=exact&userPID=1000&userLocation=USA&userIMS=&userInterchange=%5B%7C%7Br&userSide=&userDate=2003&userDate2=2007&dbModel=12.11&userModel=Buick%20Rendezvous&dbPart=522.1&userPart=Air%20Ride%20Compressor&sessionID=200000000000000000516298985&userPreference=zip&userZip=55303&userLat=45.2924&userLong=-93.4325&userUID=0&userBroker=&userPage=1&iKey=)
mile

Are you sure the struts are not leaking?

Click Here (http://parts.nalleygmc.com/showAssembly.aspx?ukey_assembly=367002) for all available parts for the level control system listed by GM.

Pretty sure the rear shocks are not leaking, they seem to hold air. I had it happen on my 02 where the rear shocks were bad and would not hold air. I had the shocks replaced and the air harness - it was bottoming out on the bump stops inside the coil springs, that was over $800 dealer price.
Thanks for the link - that was a great help.

Dave